BritBike Forum logo
BritBike SponsorBritBike SponsorBritBike SponsorBritBike SponsorBritBike Sponsor SteadfastCyclesBritBike SponsorBritBike SponsorBritBike SponsorBritBike SponsorHepolite PistonsBritBike SponsorBritBike Sponsor
Upgrade to: Gold Membership | Premium Membership | Vendor Membership | Site Sponsor Membership
Words from our sponsors..
Vintage Motorcycle Auctioneers!
Vintage Motorcycle Auctioneers

CLICK HERE to see VIDEO
How the Electric Roller Starter works.

ORDER on eBay. CLICK HERE!
Buy your Electric Roller Starter here
ShoutChat Box
Comment Guidelines: Do post respectful and insightful comments.
Buy BritBike staff a coffee
Buy BritBike's staff a coffeeStill here since 1996 serving BritBike enthusiasts..
Search eBay for motorcycle parts in following countries
Australia, Canada, France, Holland, Italy, United Kingdom, USA
Random Gallery photo
Member Spotlight
BuzzKilr
BuzzKilr
MotorCity USA
Posts: 42
Joined: November 2004
Show All Member Profiles 
Newest Members
Payne, Mysticbus, T140v, BradM, Andrew C.
11015 Registered Users
Top Posters(30 Days)
franko 138
koan58 67
DavidP 56
Popular Topics(Views)
1,148,746 mail-order LSR
a word from..
Forum Statistics
Forums35
Topics68,930
Posts690,849
Members11,015
Most Online14,755
May 5th, 2019
Who's Online Now
80 registered members (Allan Gill), 2,047 guests, and 944 spiders.
Key: Admin, Global Mod, Mod
Previous Thread
Next Thread
Print Thread
Rate Thread
yamaha 650 front end on oif frame. #139905 04/23/08 5:58 pm
Joined: Aug 2001
Posts: 6
norton71 Offline OP
BritBike Forum member
OP Offline
BritBike Forum member
Joined: Aug 2001
Posts: 6
greetings

I have a 71 and 72 bonneville. i have two front ends from yamaha 650's. the bearings are larger and the stem is longer on the yamaha, years ago I was told they were interchangable. Any tech or bearing numbers etc. would be appreciated. I want to change because of the disc brake as i want to ride the bikes more and i am in an area of heavy traffic. The conical (comical) front drum is just junk.

Support Your #1 BritBike Forum!

Check out British motorcycles for sale:
British Motorcycles on e-Bay UK
British motorcycles on e-Bay North America
CLICK HERE to see VIDEO
How the Electric Roller Starter works.


ORDER on eBay. CLICK HERE!

Buy your Electric Roller Starter here
Re: yamaha 650 front end on oif frame. #139906 04/23/08 6:34 pm
Joined: Dec 2004
Posts: 194
Peter Jones Offline
BritBike Forum member
Offline
BritBike Forum member
Joined: Dec 2004
Posts: 194
The conicals can be improved......longer brake arms, centred backplate and good adjustment.


Having said that, discs with good pads make for a less worrying ride. smile

Re: yamaha 650 front end on oif frame. #139907 04/23/08 6:34 pm
Joined: Jul 2006
Posts: 1,113
J
J. Charles Smith Offline
BritBike Forum member
Offline
BritBike Forum member
J
Joined: Jul 2006
Posts: 1,113
I do not have any experience with this particular swap, but I recently did mount a set of Cerianis on an OIF. I believe the only viable alternative is to fit a .75" diameter steering stem to the Yamaha trees. The problem is that the OIF steering head bearing "cup" has a unique outer diameter (BTW, the bearings are available at a typical auto shop - they are a common trailer wheel bearing) and there are no alternative inner "cone" bearings. HTH

Re: yamaha 650 front end on oif frame. #139908 04/23/08 6:41 pm
Joined: Jul 2006
Posts: 1,113
J
J. Charles Smith Offline
BritBike Forum member
Offline
BritBike Forum member
J
Joined: Jul 2006
Posts: 1,113
The Timken bearing series is LM11900. The cones are LM11949 and the cups are LM11910. They are identical top and bottom.

Re: yamaha 650 front end on oif frame. #139909 04/23/08 8:52 pm
Joined: Aug 2001
Posts: 6
norton71 Offline OP
BritBike Forum member
OP Offline
BritBike Forum member
Joined: Aug 2001
Posts: 6
Thanks for the help.


Moderated by  John Healy 

Home | Sponsors | Newsletter | Regalia | Calendar | Bike Project | BritBike Museum | Spiders Cartoons | DVD- Manuals & Parts books
Upgrade to: Gold Membership | Premium Membership | Vendor Membership | Site Sponsor Membership
Powered by UBB.threads™ PHP Forum Software 7.7.3